Gesellschaft



Feb. 12, 1929.

A. RADERMACHER PRINTING MECHANISM OF CASH REGISTERS Filed April 29, 1926 Patented Feb. 12, 1929.

UNITED STATES 1,102,111 PATENT; OFFICE.

AUGUST RADERMACHER, F ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP .AKTIEN- GESELLSCHAFT, OF ESSEN-ON-THIfI-BUHR, GERMANY. 1

rnmrmo innonamsm or CASH REGISTERS.

Application filed April 29, 1926, Serial No. 105,514, and in Germany June 29,, 1325.

This invention relates to printing mechanisms of cash registers of the kind in which the printing operation is adapted to be controlled by means of a feeling device for the printing label. In well-known devices of this kind this control is effected in such a manner that the driving mechanism or setting mechanism of the machine, the drive of the printing mechanism or of the printing stamp is locked by the action of the feeling device feeling the printing label. it

According to the invention, the effect in question is attained by changing through the influence of the feeling device for the printing label the direction of movementof the printing stamp which is actuated in the same manner at each operation of the machine.

In comparison with the known devices the present arrangement possesses the advantage that the control operation for the printing is independent from the driving and setting mechanism of the machine and from the drive of the printing stamp and that there exists the possibility of not only preventing the particular impression but also of having an impression take place at another printing place in case there are provided a plurality of sets of types. 7 y a y The invention will now be described with reference to the accompanying drawing in which: 1

Fig. 1 is a side view of an embodiment the invention and A 1 Fig. 2 a corresponding plan view.[ Arranged for cooperation with the typewheels 1 is the printing stamp 2 which is mounted b means of a pin 3 on arms 4, 5 which are rigidly fastened on a shaft 6 mounted for rotation in the frame. An extension 7 of the arm 4 cooperates by means of a roller 8 with acam disc 10 rigidly fastened on the driving shaft 9. A rod 11 which is fixed in the frame rigidly carries a guide member 12 with the lower face 13 of which cooperates a roller 14 mounted on the printing stamp 2. The rollers 8 and 14 bear yieldingly on the cam disc 10 and the guide member 12, 13, respectively, through the action of a spring 16 engaging an arm of the printing stamp 2.

Fastened on the driving shaft 9 is a second cam disc 17 with which cooperates a roller 18 of an arm which is rotatably mounted on a shaft 19 arranged in the frame. The arm 20 is rigidly connected by means of a in the frame and the other arm of which carries a pin 30 designed'to cooperate with an arm 31 of the printing stamp2. Connected with the pin 22 is a spring 32 tending tohold.

the roller- 18 in contact with the cam disc 17 When outof operation, the several parts i assume the position shownin the drawing in which the printing stamp 2 andthe feeler 23 are in the positions in which they are withdrawn from the t pe wheels 1 and the opening 26, respective y. to the driving shaft 9, which executes a 0mm plete revolution in clockwise direction at each operation of the machine,there will first be released the arm 20 and together with it the feeler23 so that the latter may move towards the right under the action of the spring 32. b However, before the feeler will have completed the movement permitted to it by If rotation is imparted the cam disc 17 it is stopped by the inserted printing label 28 which prevents the bentoff portion 25 from passing through the opening 26. During the described movement of the feeler 23, there is also rocked the bellcrank lever 29 which is in engagement with the pin 22. The rocking movement of the bell-crank lever 29 is dimensioned in such a manner that its pin 30 remains still out of the path of the arm 31 ofthe printing stamp 2. Therefore, in the movement of the printing stamp 2 thereu on caused by means of the cam disc 10 an the pin 3, the stamp 2 will remain by its roller 14 in contact with the guide 12, 13 under the action of the spring 16, so that it will perform the impression of the set types on the printing label 28. Upon the impression having been made, the printing stamp 2 is returned by its sprin '16 and thereafter the arm 20 together with t 1e feeler 23 and the bell-crank lever 29 are returned.

by the cam disc 17 so that all parts are again in their initial position at the end of the revoshaft 9.,

lution of the drivin If no printing la the bent-off portion 25 of the fceler 23 in its movements towards the right Will pass through the opening 26. In this case the bellcranlr lever 29 will be rocked further than in the case described first so that its pin 30 will come into the dot-and-dash line position indicated by 30 (Fig. 1) in which it lies in the path of the arm 31. In the succeeding movement of the printing stamp 2 towards the right the arm 31 Will strike against the pin 30 and be stopped by the same, While the movement of the pivot pin 3 of the printing stamp 2 is still continued for a certain distance. As a result thereof the printing stamp 2 changes its direction of movement and at the end of its movement directed towards the right it reaches the dot-and-dash line position indicated by 2 Fig. 1) without coming into contact with the type wheels. In case no printing label is inserted, a con tamination of the printing stamp by the.

inked type Wheels is therefore avoided. The

dislodged parts are returned in the same manner as in the case described above. Claims:

. 1. In a cash register, a print ng mechanism comprising printing types, means for guiding a printing label over the printing types, a printing stamp, means for imparting to said stamp a printing movement towards the types at each operation of the machine, a tionary guide member for the printing stamp, a spring connected with the printing stamp and adapted to hold the stamp in its operative position by forcing it against the guide member, a feeling mechanlsm for i'eehng the printing label, and means adapted to be actuated by the feeling mechanism and designed to rock the printing stamp from operative into inoperative position when no label is inserted in the machine.

2. In a cash register a printing mechanism comprising printing types, means for guiding a printing label over said types, a'shaft, an arm rigid on said shaft, a printing stamp on said arm, asecond arm rigid on said shaft, cam cooperating with said second arm and adapted to cause a movement of said printing stamp toward said types, a stationary guide for said printing stamp, resilient means tending to hold said printing stamp in contact with said stationary guide and said second arm in contact With said cam, a feeling mechanisin for feeling the printing label, and means actuated by said feeling mechanism for rocking said printing stamp into an inoperative position during a printing movement when no label is in the machine.

3. In a cash register, a printing mechanism compris-sing printing types, means for guiding a printinglabel over said printing types, a printing stamp, means for iniparting to said printing stamp a movement towards said types at each operation of the machine, a feeling mechanism for feeling the printing label, and means interposed between said feeling mechanism and said printing stamp tor changing the direction of movementof the printing stamp when no printing label is present.

l. In a cash register, a printing mechanism comprising printing types, means for guiding a printing label over said printing types, a pivotally mounted printing stamp, means for imparting to said stamp a printing movement towards said types at each operation of the n'iaehine, a feeling mechanism including a feeler for feeling the printing label, an arm on said printing stamp, and a stop connected With said teeler and adapted to be moved into the path of said arm of the printing stamp when no label is inserted in the machine for stopping it in the printing movement of said stamp and rocking said stamp on its pivot whereby the direction of movement of said stamp is changed;

5. In a cash register, a printing mechanism comprising printing types, means for guiding a printing label over said printing types, a stamping mechanism comprising a printing stamp and an actuating member on which said printing stamp is pivotally mounted, said actuating member being adapted to impart to said printing stamp a movement towards said types at each operation of themachine, a feeling mechanism for feeling the printing label, and means interposed between saidfeeling mechanism and said printing stamp for rocking said printing stamp on its pivot out of its operative path of movement when no printii'iglahel is present during the ope 'ation of said actuating member.

The foregoing specification signed at Cologne, Germany, this 13th day of April,

AUGUST RADERMACHER.

till 

